The basic requirements for sealing of mining winch is good sealing, safe and reliable, long life, and should strive for compact structure, simple system, convenient manufacturing and maintenance, and low cost. Most of the seals are vulnerable parts, interchangeability should be ensured, standardized and serialized.
The type and purpose of the sealing material, the sealing material should meet the requirements of the sealing function. Due to the different media to be sealed and the different working conditions of the equipment, different adaptability of the sealing material is required. The requirements for sealing materials are generally: the material has good compactness and is not easy to leak the medium; it has appropriate mechanical strength and hardness; it has good compressibility and resilience, and small deformation; it does not soften or decompose at high temperatures, does not harden at low temperatures, and is not brittle crack.
The performance of the mining winch is very good, so its application in the market is also very extensive. Many users will choose mining winches when buying winches, but operate according to requirements when using them, otherwise it is prone to failure. Especially the protection system of the winch is prone to problems, but this kind of problem is generally due to the brakes, as long as it is replaced in time, it will be fine.
Any problems with mine winches are found on the protection system. For example, if there is a problem with the brake shoe protection, if the safety circuit is gone, you have to change the brake pads. Others are similar. What are the electrical components of the mine winch, but the electrical components and hydraulic station components, there may be errors, but they are not Big mistake, you have to understand the system to fix it. The deceleration point is on the depth indicator. Just change the position of the upper and lower deceleration points and the travel switch, and put it wherever you want to decelerate.
If the frequency converter of the frequency conversion winch is faulty, the line is faulty. The control program is generally no problem, you can't change it, and the protection is no problem. The part is prone to failure. The hydraulic station is not a hydraulic pump. There is no problem with the pump except that it burns. For example, the valve is burned, or the adjustment place needs to be adjusted, and the oil pipe leaks or is blocked. Generally that thing will not be broken except for broken parts. In a word, if you want to fix this thing, you have to understand the schematic diagram, otherwise it's useless.
Mining winch need to use DC, AC cut resistance, and AC variable frequency cut resistance winch. The hydraulic pressure adjustment of the winch is the same. At present, the pressure regulating method of winch basically adopts electro-hydraulic proportional valve to regulate pressure. That is, the electronic control system sends a control voltage or current to the proportional valve, and the control voltage (flow) is basically linear with the system pressure. The greater the voltage (flow), the greater the pressure of the hydraulic station.
